25 Birchen Grove, London, NW9 8RT

1. 7 Feb 2026

   Received by Brent

2. 25 Mar 2026

   Decision issued: Certificate of Lawfulness - Granted

3. 10 Aug 2026

   Added to PlanIndex

Brent granted permission on 25 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 35 Birchen Grove, London, NW9 8RT

  25/2750 Submitted 29 Sep 2025 50 yards away

  Demolition of side garage and existing rear extension and proposed single storey side and rear extension, hip to gable extension, rear dormer window with Juliet balcony and 3x front rooflights to front roofslope of the dwellinghouse (Revised Description).

  Granted Householder Extension Loft or dormer +2 12 docs
  Small domestic

• 15 Birchen Grove, London, NW9 8RT

  21/2400 Submitted 25 Jun 2021 50 yards away

  Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3.25m Eaves height - 3m

  Granted Prior approval Extension 8 docs
  Small domestic

• 15 Birchen Grove, London, NW9 8RT

  21/3876 Submitted 15 Oct 2021 50 yards away

  Prior approval for a single storey rear and single storey side to rear extensions to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m & 6m Maximum height - 3.25m & 3.25m Eaves height - 3m & 3m

  Granted Prior approval Extension 9 docs
  Small domestic

• 15 Birchen Grove, London, NW9 8RT

  21/3191 Submitted 19 Aug 2021 50 yards away

  Certificate of lawfulness for proposed erection of single storey side and single storey rear extension to dwellinghouse

  Refused Lawful development Extension 9 docs
  Small domestic

• 14 Old Church Lane, London, NW9 8TD

  21/2624 Submitted 8 Jul 2021 100 yards away

  Retrospective application for single-storey side extension; redesign of front garden to include hard and soft landscaping, and associated boundary treatment with gated accesses, and supporting pillars to the dwellinghouse.

  Refused Householder Extension 5 docs
  Small domestic

• 20 Old Church Lane, London, NW9 8TD

  22/3710 Submitted 31 Oct 2022 100 yards away

  Proposed installation of new first-floor front opening with timber window and replacement of all front uPVC windows with timber windows to dwellinghouse (amended description)

  Granted Householder Windows or glazing 13 docs
  Domestic

• 26/2285 Awaiting decision

  137 Chatsworth Road, London, NW2 5QT

  Certificate of lawfulness for proposed use as supported housing

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2277 Awaiting decision

  65 The Avenue, Wembley, HA9 9PH

  Certificate of lawfulness for proposed conversion of outbuilding into a gym and sauna and extension to the outbuilding in rear garden of the dwellinghouse.

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2199 Awaiting decision

  Flat 8, 399 Neasden Lane North, London, NW10 0BD

  Certificate of lawfulness for existing use of rear unit 8 as a self-contained flat.

  Received 2 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2093 Awaiting decision

  17 Buller Road, London, NW10 5BS

  Certificate of lawfulness for proposed alterations to front, side and rear fenestrations including installation of ground floor side oriel window and rear timber door to dwellinghouse

  Received 18 Aug, published by the council 21 Sep 2026 Lawful development
• 26/1208 Granted

  50 Ballogie Avenue, London, NW10 1TA

  Certificate of lawfulness for proposed rear dormer extension, hip to gable roof extension, alteration to fenestration and installation of rooflights to the dwellinghouse

  Received 13 May, published by the council 25 Jul 2026 Lawful development